Spool



FIG. 1 is a perspective view of the spool of my design;

FIG. 2 is a front elevational view thereof, with the rear elevationalview, left side elevational view and right side elevational view beingthe same;

FIG. 3 is an enlarged elevational view of a circled portion of the spoolof FIG. 2; and,

FIG. 4 is a top plan view thereof, with the bottom plan view being thesame.

CLAIM The ornamental design for a spool, as shown and described.